R&D Report 1994-13 : DRACULA: Dynamic range control for broadcasting and other applications. N.H.C. Gilchrist The BBC has developed a digital processor which is capable of reducing the dynamic range of audio in an unobtrusive manner. It is ideally suited to the task of controlling the level of musical programmes. Operating as a self-contained dynamic range controller, the processor is suitable for controlling levels in conventional AM or FM broadcasting, or for applications such as the compression of programme material for in-flight entertainment. It can, alternatively, be used to provide a supplementary signal in DAB for optional dynamic compression in the receiver.